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View Full Version : so i found out ive got no cat in my exhaust system


d15z1SUX
22-09-2007, 05:22 PM
so i had a look at the undercarriage of my car while it was up on a hoist at the mechanics today. and a friend pointed out that it had no cat. mechanic also confirmed this. seems that when it was this way when i bought the car. seems i have a custom exhaust from the header onwards.

i had to go over the pits on one occasion and nothing was said by the inspector? maybe the inspector thought my resonator was a cat. lol.

so are cars made before 1995 exempt from having a cat? or am i just really lucky?

i would also like to take this chance to say ive done 520km on one tank and i still have about 1/8 or just under that of fuel left!!! :)
oh yea honda
22-09-2007, 05:30 PM
Highly Illegal, Big fines can be incurred.
Sydsyd
22-09-2007, 05:32 PM
u're just lucky...which is good, however u'd better fit a cat soon b4 ur luck runs out...

do u do highway driving or city driving all the time? if u say city driving, then it'd be a very good fuel consumption:)
blahZ
22-09-2007, 05:34 PM
is ur car loud?
d15z1SUX
22-09-2007, 05:37 PM
i do a mix of both. probably more city driving. i use bp ultimate and i have the d15z1 vtec-e engine hence my nick.

is fitting and buying a cat expensive? any recommendations of any brands or models?
Luke Accord
22-09-2007, 05:39 PM
If you get busted, i heard the fine is $1000 a cylinder.
d15z1SUX
22-09-2007, 05:39 PM
nah its not that loud hey. no popping no barpppppppppppp. its a bit deep i guess its pretty moderate in volume.
Sydsyd
22-09-2007, 05:39 PM
if u're doing up ur engine, might as well get a hi-flow cat...check the traders, i think one of them has metal cat...i heard that it's good...
AsH_
22-09-2007, 05:49 PM
If you get busted, i heard the fine is $1000 a cylinder.

so we getting fined by how many cylinders we got???

*movez to rotor*
d15z1SUX
22-09-2007, 05:56 PM
If you get busted, i heard the fine is $1000 a cylinder.

lol at v8's
AsH_
22-09-2007, 06:01 PM
veyron W16...

not that the owner couldnt afford the fine...
tRipitaka
22-09-2007, 06:17 PM
how did your car pass roadworthy ?
jimidy
22-09-2007, 06:27 PM
yea my mate got done the other day in his celica for having no cat $9000 fine and had to get it towed if u can get a second hand cat exhaust place will prob charge around $80 to fit it for you if u still want the loudness just take all the stuff out of the cat before you weld it on and they will never no unless u get done by epa
d15z1SUX
22-09-2007, 06:29 PM
well i was defected for ride height and exhaust. put my car back up. exhaust passed. they checked my undercarriage and nothing was said about the cat?
d15z1SUX
22-09-2007, 06:50 PM
hrm yeh i should buy one as soon as i get time to.
EZZY
22-09-2007, 07:07 PM
as suggested, it is hightly illegal.

in NSW (from memolry) -
$10k fine for having a gutted cat (ie. a "fake" cat)
$20k fine for having no cat
zco
23-09-2007, 01:12 AM
its not a 10k fine. my brother got done for no cat. he ran a test pipe on his car and got sent to EPA. they told him to fix it and come back.. got it cleared and bobs your uncle.

either my brother was mighty lucky, or the EPA wasnt doing their job properly.
EZZY
23-09-2007, 01:19 AM
its not a 10k fine.



either my brother was mighty lucky, or the EPA wasnt doing their job properly.

so you werent sure about the "its not a 10k fine" statement then...?!?
zco
23-09-2007, 01:31 AM
its called sarcasm mate.
EZZY
23-09-2007, 01:34 AM
its called sarcasm mate.
and FYI.. i was sh!t stirring.
creativepunka
23-09-2007, 02:01 AM
Pff 10k fine, 1000$ per a cylinder. Its all a crock of shit. The fine up here in QLD is more for gutting a cat than not having one. You would have to be a cockhead to the transport boys for them to hand out a big fine for that anyway. I was done for not running one in my RX2 and on a 180sx. Got told to put one in both times and no fines, another guy i know got a 150$ fine for it. As for how did it pass roadworthy? My cars always seem to pass, if it aint there then i guess its easy to miss lol.
SeverAMV
23-09-2007, 02:32 AM
depends on who finds out you dont have a cat and how. if a cop finds you dont have one during their inspection, theres a big fine. but for roadworthy check, i think they may be more lenient. over here, depends on situation. there was a report in the police records of someone receiving a $75000 fine for no cat apparently, but that may have been because he had several vehicles without cats.
beeza
23-09-2007, 10:31 AM
I just bought one of Ebay 'Magnaflow Hi flow cat' with a metal core for around $190 ish.
kazam
23-09-2007, 10:41 AM
I just bought one of Ebay 'Magnaflow Hi flow cat' with a metal core for around $190 ish.

how is it?
blahZ
23-09-2007, 10:46 AM
so will it be a defect if u have no resonator?
sry don mean to hijack
kazam
23-09-2007, 10:48 AM
yes..
XP02ED
23-09-2007, 10:49 AM
aint it a 20k fine with no cat?
beeza
23-09-2007, 10:53 AM
how is it?

Haven't installed it yet.I will getting this installed + X-Force Headers + X-Force Muffler in a couple of weeks.I will put up a thread on it,can't wait :p



so will it be a defect if u have no resonator?
sry don mean to hijack

I heard it will sound like crap with no resonator too.
beeza
23-09-2007, 10:55 AM
aint it a 20k fine with no cat?

It vary's alot from $150 to 10k.You get a lot of mixed reports on this.A lot of people get let off and just told to get one...
kazam
23-09-2007, 10:56 AM
Haven't installed it yet.I will getting this installed + X-Force Headers + X-Force Muffler in a couple of weeks.I will put up a thread on it,can't wait :p



nice will keep an eye out 4 it
XP02ED
23-09-2007, 10:57 AM
ah alright kool :D
didz
23-09-2007, 11:10 AM
LOLOLOLOLOLOL as if anyone would pay a fine that high for not having a cat. its crazy.

Get some real confirmation without speculation.
d15z1SUX
23-09-2007, 12:37 PM
a 10k fine is gonna f**k up your average joe really bad ahha...
1996ek1
23-09-2007, 03:33 PM
Can't you just give some shit about 'I bought the car second hand, it must have already been like that?' etc....
Killa From Manila
23-09-2007, 03:55 PM
yes..

how can it be a defect 4 no resonator?? they dont control emmissions, just sound
aaronng
23-09-2007, 04:25 PM
Defect for noise loudness if you exceed 90 dB for a car built after 1st January 1983.
beeza
23-09-2007, 04:35 PM
And how about Harley's that are so Bloody loud ya can't even think when they rev past ya?
Where I work they go past all day everyday.
aaronng
23-09-2007, 04:41 PM
Not sure, bikes are limited to 94dB, but Harleys do exceed that. Guess you'll have to call up the EPA and ask.
iced
23-09-2007, 04:42 PM
so whats your number plate? ;)
beeza
23-09-2007, 04:52 PM
Yeh I'm sure the cops are told to leave em' alone.
kazam
24-09-2007, 10:33 AM
sum harleys are ridiculously loud, like its just unreal how loud they are! and in my lifetime of witnessing many rbt's many people just pulled over or whatever i dont think i've ever seen a harley pulled over....
bennjamin
24-09-2007, 10:53 AM
I dont know who would be stupid enough to run no cat / guttered cat. Its been tested and there is little or no HP improvement.
Due to the large fines involved ( even by gossip) the point is its stupid ! Get a proper working cat y0 :)
EGB18CT
24-09-2007, 11:05 AM
most cops are too scared to pull harleys over, gf uncles got one and he said it himself...

i run no resenator on my b18 and yes it is massive loud, sounds very deep low and screams up high
beeza
24-09-2007, 12:23 PM
most cops are too scared to pull harleys over, gf uncles got one and he said it himself...

Makes sense.Easier just to leave em' alone.Bit of an unspoken word in the force I reckon


i run no resenator on my b18 and yes it is massive loud, sounds very deep low and screams up high

Thanks mate :thumbsup:
zco
24-09-2007, 01:57 PM
I dont know who would be stupid enough to run no cat / guttered cat. Its been tested and there is little or no HP improvement.
Due to the large fines involved ( even by gossip) the point is its stupid ! Get a proper working cat y0 :)

im at work so i cant see these pics. but i know one of them shows my engine bay..
this is my car..

http://i82.photobucket.com/albums/j255/zcozco/P9260345.jpg

http://i82.photobucket.com/albums/j255/zcozco/P9260337.jpg

did someone say no cat ? lol
kingyy
24-09-2007, 02:03 PM
today i placed a skyline r33 gtr hi flow cat onto my ek civic and it sounds awesome
bennjamin
24-09-2007, 02:13 PM
im at work so i cant see these pics. but i know one of them shows my engine bay..
this is my car..





did someone say no cat ? lol

i have no idea of what you are talking about lol. Cat ? Piping ? Where ? :p
SeverAMV
24-09-2007, 03:53 PM
Not sure, bikes are limited to 94dB, but Harleys do exceed that. Guess you'll have to call up the EPA and ask.

ADR rules require 90db when stationary as the limit, and for in gear, up to 77db in second or third gear, travelling at 50km/h.
EZZY
24-09-2007, 04:14 PM
ADR rules require 90db when stationary as the limit, and for in gear, up to 77db in second or third gear, travelling at 50km/h.
when i was going through engineer's cert back in the days, the noise tester has to be an an 45-degree angle, 2.5 meters (-ish) away from the exhaust tip.
not sure about the noise level in 2nd and/or 3rd gears.
SeverAMV
24-09-2007, 04:19 PM
when i was going through engineer's cert back in the days, the noise tester has to be an an 45-degree angle, 2.5 meters (-ish) away from the exhaust tip.
not sure about the noise level in 2nd and/or 3rd gears.

hmm, i didnt type that out too clearly.

there are two tests they have to do for exhaust volume, one is when the vehicle is stationary. didnt really pay attention to how they measure, but it must not exceed 90db when the vehicle is stationary, and it should be roughly where your car hits 50km/h in second or third gear, depending on how they want to test.

then theres the vehicle in motion test, where your car must not exceed 77db when travelling at/to 50km/h in second or third gear, whichever they wish to test. i found this test annoying. my tailpipe recently fell off, so my exhaust is quiet at 2000-3000rpm and perfectly legal, but booming at every other part of the rev range.
040501912
24-09-2007, 05:15 PM
.... I hvnt heard anything about FINES in WA about running a car with out cat..

anyhow.. few questions
does race cars have CAT?
Bellow built date 1995.. most car doesnt have CAT fitted.. is that true?

thanks
SeverAMV
24-09-2007, 08:03 PM
.... I hvnt heard anything about FINES in WA about running a car with out cat..

anyhow.. few questions
does race cars have CAT?
Bellow built date 1995.. most car doesnt have CAT fitted.. is that true?

thanks

of course there are fines in WA, all states and territories in australia have to comply with the Australian Design Rules, otherwise they wouldnt be the Australian Design Rules.

most race cars dont use a CAT. most race cars utilise extremely high octane fuels which generally dont contain as many impurities as street fuel, and have much greater efficiency rates. however, it would be optimal to have a catalytic converter as something like 80% of air contains nitrogen, which will combust into oxides of nitrogen in the atmosphere which is unstable and can cause harm to others, and the main idea of having a cat is to convert the oxides of nitrogen back to harmless N2. i think somewhere in this thread it was mentioned that all cars after 1983 must have a CAT, with no exemptions if theyre a street vehicle.

EDIT: oh and before i forget, dont some honda's have their cat integrated into the extractors?